CORALIE radial-velocity search for companions around evolved stars (CASCADES) - IV. New planetary systems around HD 87816, HD 94890, and HD 102888 and an update on HD 121056

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Volume 699 (July 2025)

A&A, 699 (2025) A38

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Table 7

Comparison of the orbital parameters HD 121056 b and c from different studies.

Parameter	Unit	Jones et al. 2015b	Wittenmyer et al. 2015	Feng et al. 2022	This work
P_b	(days)	88.9 ± 0.1	89.09 ± 0.11	${88.87}_{- 0.12}^{+ 0.12}$ $\[88.87_{-0.12}^{+0.12}\]$	${89.23}_{- 0.06}^{+ 0.06}$ $\[89.23_{-0.06}^{+0.06}\]$
K_b	(m s⁻¹)	45.5 ± 1.6	47.9 ± 11.0	${46.66}_{- 1.12}^{+ 1.16}$ $\[46.66_{-1.12}^{+1.16}\]$	${44.68}_{- 1.69}^{+ 1.73}$ $\[44.68_{-1.69}^{+1.73}\]$
e_b		0.05 ± 0.04	0.06 ± 0.04	${0.06}_{- 0.03}^{+ 0.03}$ $\[0.06_{-0.03}^{+0.03}\]$	${0.13}_{- 0.04}^{+ 0.04}$ $\[0.13_{-0.04}^{+0.04}\]$
ω_b	(deg)	138 ± 60	300 ± 132	${101.94}_{- 25.4}^{+ 35.6}$ $\[101.94_{-25.4}^{+35.6}\]$	${171.14}_{- 21.99}^{+ 21.69}$ $\[171.14_{-21.99}^{+21.69}\]$
T_{P_b}	(JD − 2 450 000)	2997.8 ± 16.7	4810 ± 33	${2989.08}_{- 1.8}^{+ 78.7}$ $\[2989.08_{-1.8}^{+78.7}\]$	${6471.79}_{- 5.04}^{+ 5.33}$ $\[6471.79_{-5.04}^{+5.33}\]$
m_b sin i_b	(M_Jup)	1.38 ± 0.15	1.25 ± 0.04	${1.57}_{- 0.07}^{+ 0.07}$ $\[1.57_{-0.07}^{+0.07}\]$	${1.15}_{- 0.04}^{+ 0.04}$ $\[1.15_{-0.04}^{+0.04}\]$
P_c	(days)	2131.8 ± 88.3	2203 ± 486	${3923.66}_{- 330.23}^{+ 616.25}$ $\[3923.66_{-330.23}^{+616.25}\]$	${3128.41}_{- 47.13}^{+ 52.09}$ $\[3128.41_{-47.13}^{+52.09}\]$
K_c	(m s⁻¹)	69.0 ± 3.3	81.9 ± 14.0	${62.29}_{- 7.7}^{+ 7.6}$ $\[62.29_{-7.7}^{+7.6}\]$	${61.44}_{- 2.34}^{+ 2.39}$ $\[61.44_{-2.34}^{+2.39}\]$
e_c		0.17 ± 0.06	0.18 ± 0.07	${0.36}_{- 0.09}^{+ 0.11}$ $\[0.36_{-0.09}^{+0.11}\]$	${0.30}_{- 0.03}^{+ 0.03}$ $\[0.30_{-0.03}^{+0.03}\]$
ω_c	(deg)	166.5 ± 20.5	205 ± 17	${321.35}_{- 13.23}^{+ 11.6}$ $\[321.35_{-13.23}^{+11.6}\]$	${83.32}_{- 8.22}^{+ 8.66}$ $\[83.32_{-8.22}^{+8.66}\]$
T_{P_c}	(JD − 2 450 000)	2684.1 ± 235.7	3068 ± 405	${1730.38}_{- 560.66}^{+ 295.15}$ $\[1730.38_{-560.66}^{+295.15}\]$	${6574.13}_{- 52.87}^{+ 50.57}$ $\[6574.13_{-52.87}^{+50.57}\]$
m_c sin i_c	(M_Jup)	5.98 ± 0.76	6.14 ± 1.99	${6.937}_{- 0.52}^{+ 2.05}$ $\[6.937_{-0.52}^{+2.05}\]$	${4.97}_{- 0.21}^{+ 0.22}$ $\[4.97_{-0.21}^{+0.22}\]$

Notes. For the solution of Wittenmyer et al. (2015), we only show here the results obtained with the “bootstrap solution” of the combined analysis (using FEROS, CHIRON, and UCLES) in the paper.

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